rework plugin management

swshop/shopView.lua

@@ -0,0 +1,219 @@
+local Config     = require('config')
+local Event      = require('event')
+local itemDB     = require('itemDB')
+local Milo       = require('milo')
+local Sound      = require('sound')
+local UI         = require('ui')
+local Util       = require('util')
+
+local colors     = _G.colors
+local multishell = _ENV.multishell
+local os         = _G.os
+local shell      = _ENV.shell
+
+local config = Config.load('shop')
+local shopTab
+
+local function startShop(node)
+  if shopTab then
+    multishell.terminate(shopTab)
+  end
+  shopTab = shell.openTab('/packages/swshop/swshop.lua', node.domain, node.password)
+end
+
+-- node has been reconfigured
+Event.on('shop_restart', function(_, node)
+  startShop(node)
+end)
+
+-- milo is being terminated
+Event.on('terminate', function()
+  if shopTab then
+    multishell.terminate(shopTab)
+    shopTab = nil
+  end
+end)
+
+--[[ Display ]]--
+local function createPage(node)
+  local monitor = UI.Device {
+    device = node.adapter,
+    textScale = node.textScale or .5,
+  }
+
+  function monitor:resize()
+    self.textScale = node.textScale or .5
+    UI.Device.resize(self)
+  end
+
+  local page = UI.Page {
+    parent = monitor,
+    header = UI.Window {
+      backgroundColor = colors.cyan,
+      ey = 3,
+    },
+    grid = UI.Grid {
+      y = 4, ey = -7,
+      headerHeight = 3,
+      headerBackgroundColor = colors.gray,
+      backgroundSelectedColor = colors.black,
+      unfocusedBackgroundSelectedColor = colors.gray,
+      columns = {
+        { heading = 'Stock',   key = 'count',     width = 6, justify = 'right' },
+        { heading = 'Name',    key = 'displayName' },
+        { heading = '   Price', key = 'price',     width = 9, justify = 'right' },
+        { heading = 'Address', key = 'address',   width = 12 },
+      },
+      sortColumn = 'displayName',
+    },
+    footer = UI.Window {
+      y = -6,
+      backgroundColor = colors.gray,
+      prevButton = UI.Button {
+        x = 2, y = 3, height = 3, width = 5,
+        event = 'previous',
+        backgroundColor = colors.lightGray,
+        text = ' \017 ',
+      },
+      nextButton = UI.Button {
+        x = -6, y = 3, height = 3, width = 5,
+        event = 'next',
+        backgroundColor = colors.lightGray,
+        text = ' \016 ',
+      },
+      info = UI.Window {
+        x = 9, ex = -9,
+        textColor = colors.white,
+      }
+    },
+    timestamp = os.clock(),
+  }
+
+  function page.header:draw()
+    self:clear()
+    if node.header then
+      self:centeredWrite(2, node.header, nil, colors.white)
+    end
+    self:write(self.width - 15, 3, 'powered by Milo', nil, colors.lightGray)
+  end
+
+  function page.footer.info:draw()
+    self:clear()
+    local selected = page.grid:getSelected()
+
+    if selected then
+      if selected.info then
+        self:centeredWrite(2, selected.info)
+      end
+
+      self:centeredWrite(4, 'To purchase:')
+      self:centeredWrite(5, string.format('/pay %s@%s.kst <amount>', selected.name, node.domain))
+    end
+  end
+
+  function page.grid:getRowTextColor(row, selected)
+    if selected then
+      return colors.yellow
+    end
+    return UI.Grid:getRowTextColor(row, selected)
+  end
+
+  function page.grid:getDisplayValues(row)
+    row = Util.shallowCopy(row)
+    row.count = Util.toBytes(row.count) .. ' '
+    row.price = string.format('%s kst ', row.price)
+    row.address = row.name
+    return row
+  end
+
+  function page:eventHandler(event)
+    if event.type == 'next' then
+      self.grid:emit({ type = 'scroll_down' })
+
+    elseif event.type == 'previous' then
+      self.grid:emit({ type = 'scroll_up' })
+
+    elseif event.type == 'grid_focus_row' then
+      self.footer:draw()
+
+    else
+      return UI.Page.eventHandler(self, event)
+    end
+
+    Event.onTimeout(.1, function()
+      self:setFocus(self.grid)
+      self:sync()
+    end)
+    return true
+  end
+
+  function page:refresh()
+    local list = Milo:listItems()
+    self.grid.values = { }
+    for k,v in pairs(config) do
+      local item = list[k]
+      if item and item.count > 0 then
+        table.insert(self.grid.values, {
+          displayName = item.displayName,
+          count = item.count,
+          name = v.name,
+          price = v.price,
+          info = v.info,
+        })
+      end
+    end
+    self.grid:update()
+    self.grid:draw()
+  end
+
+  function page:update()
+    page:refresh()
+    page:sync()
+  end
+
+  local chars = { '\183', '\7', '\186', '\7' }
+  Event.onInterval(1, function()
+    local ch = chars[math.floor(os.clock() % #chars) + 1]
+    page.header:write(2, 2, ch)
+    page.header:write(page.header.width - 1, 2, ch)
+    page:sync()
+  end)
+
+  UI:setPage(page)
+  return page
+end
+
+local pages = { }
+
+-- called when an item to sell has been changed
+Event.on('shop_refresh', function()
+  config = Config.load('shop')
+end)
+
+-- called from the shop when an item has been purchased
+Event.on('shop_provide', function(_, item, quantity, uid)
+  Milo:queueRequest({ }, function()
+    local count = Milo:eject(itemDB:splitKey(item), quantity)
+    os.queueEvent('shop_provided', uid, count)
+    Sound.play('entity.villager.yes')
+  end)
+end)
+
+--[[ Task ]]--
+local StoreTask = {
+  name = 'shop',
+  priority = 30,
+}
+
+function StoreTask:cycle(context)
+  for node in context.storage:filterActive('shop') do
+    if not pages[node.name] then
+      startShop(node)
+      pages[node.name] = createPage(node)
+    end
+    -- update the display
+    pages[node.name]:update()
+  end
+end
+
+Milo:registerTask(StoreTask)